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Regular expressions in C: examples?
...):
#include <regex.h>
regex_t regex;
int reti;
char msgbuf[100];
/* Compile regular expression */
reti = regcomp(&regex, "^a[[:alnum:]]", 0);
if (reti) {
fprintf(stderr, "Could not compile regex\n");
exit(1);
}
/* Execute regular expression */
reti = regexec(&regex, ...
How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...hould work:
SELECT CASE WHEN myfield~E'^\\d+$' THEN myfield::integer ELSE 0 END FROM mytable;
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Index (zero based) must be greater than or equal to zero
... a placeholder but you're only passing in one argument, so you should use {0} instead.
Change this:
String.Format("{2}", reader.GetString(0));
To this:
String.Format("{0}", reader.GetString(2));
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IIS7 deployment - duplicate 'system.web.extensions/scripting/scriptResourceHandler' section
...site on the default app pool in IIS7 having the framework section set to 4.0, I get the following error.
15 Answers
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ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (111)
...abled):
run the command vim /etc/mysql/my.cnf
comment bind-address = 127.0.0.1 using the # symbol
restart your mysql server once.
Update
In Step 1, if you cannot find bind-address in the my.cnf file, look for it in /etc/mysql/mysql.conf.d/mysqld.cnf file.
Update in case of MySQL replication en...
How to map atan2() to degrees 0-360
atan2(y, x) has that discontinuity at 180° where it switches to -180°..0° going clockwise.
15 Answers
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What does the “|” (single pipe) do in JavaScript?
Why does 0.5 | 0 return zero, but any integer (including negative) returns the input integer? What does the single pipe ("|") do?
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What are the advantages of using nullptr?
... handle nullptr argument!!!
1. In C++, NULL is defined as #define NULL 0, so it is basically int, that is why f(int) is called.
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WAMP 403 Forbidden message on Windows 7
...he access to your Apache server is forbidden from addresses other than 127.0.0.1 in httpd.conf (Apache's config file) :
<Directory "c:/wamp/www/">
Options Indexes FollowSymLinks
AllowOverride all
Order Deny,Allow
Deny from all
Allow from 127.0.0.1
</Directory>
The ...
Delete first character of a string in Javascript
...ant to delete the first character of a string, if the first character is a 0. The 0 can be there more than once.
14 Answer...